Pump



Dec. 7,1926. 1,610,143

- W. A. MINOR PUMP I Filed Jan. 2, 1926 .J INVENTOR BY I 42019 ATTORNEYS'f1.;om..the qair cylin'der leaks out; A further fob j'ect' of.theinvention ,is to ',.';p1-eyide1 float wntreneamwe' between the. "airchamber and 1116, pump cylinder. wliichiwill. I shut; ofi

we in... ,1926; I

' n Alpplication. January The present invention relates'tofl-punips?(and. more particularly to the type "in which fthe' cylinder has an airchamber connected; to: the-upper endthereoffor th'egpurpose of f Iabsorbing the 'fluctuationsl in the-.waterzde- 4 'f live'ry. :An object.of ;this invention' is to prevent 'theiwaterflogging or fillingofthe;.;air,.cha1nber Iwithwateriin.the event the air 5 fiche ainc'hamber:Jwh'en the Flatter becomes in- ...eliectiveLdue to the leakage ofairtherefrom. l5 Still another obj ecti of the" invention is to provide'means for draining the pump; belowfl a, floatcontrolled valve.between'theiair chain-1 iber and the cylinder span. thei stopping of.

r l thep;iimp o that the. airchambenmaybe.

refilledwithair. I I

,TOEthese and f'other ends,{the

. 'parts,l.allfof which will -be-ihereinafterf-de- W Figgjliillustratesin the appended claims; .I. ra ng= Q p a, fragmentary section of a pump'constructed in accordance with this a scribed: .the no'vel featuresbeingv pointed out,

invention; and

' Fig. 2 IS a sectional view of the back pressure check valve.

Referring morejparticularly toithe illus V turnlsurrounded by the,tubular casing 9.

VJithin the cylinder 8 operates as usual two valve pistons orbuckets,;the lower one of which is operated through arodj(not shown) andextending upwardly through the upper piston orbuoket and through thehollow rod l5 connectingwith the upper bucket. This hollow rod is guidedthrough a packing 16 on a plate 17 which closes the topof the dischargehead 3. The operating mechanism for the rods may be of anysuitableconstruction. 7 Rising from the bottom plate' of the frame 2 is anupright member 26. 1 1

f goiiltr;

. nven v consists of certain parts andlcomb nat onsot ctfas; fagcushion.or absorbent .ior 'fluctum thejch mb r}n tion y .u e t but .anacdetriment in lth'e .zpperation of, the as it accentuates 'vt-hefluctuations in the water olumni it i ons of'the fluctuations willnottake place,

airgchamber and" permitting air to enter therein; after. the drainingtakes. place.

kventionthe air chamber 37 .is formed in the upright26 which'isprovided'at its lower endwitih anenlarge'd portion having apartiassreivon To-Lnnrvranra n, mam

ftionsflin l the water delivery. gl/Vhen this. chamberis;formed fromcast-iron, the air gra'dually flealrsj through: thev porous jwalls andas amme eme the chamber becomes 1 filled Withater;oriwaterloggeohrendering, i

I @5111 this invention,, provision is made forlclosln'g'ofitheixauchamber as thewate'r'ap 7 I preaches the: chamber,-so that the 'accentuaflnfthe[illustrated"embodiment of the ini ary,,to'-providej an "air =c' h'amber which corn inunicatesfivith'the'upperend of the cylinder provision" being made torv draining the, pump 1laloovethe .check valve in the discharge pipe after the pump has ceasedoperation, jwhile at'the, same time efliectinggthe opening ofthe ftion:"38 therein. This "partition has aipas- *-'-s'ageway"39"about.jvhich avalve seat 41 is formed below the partition; "With 'thi'sjvalve seat,a'valve member 43 cooperates, said valve member being mounted on a stem44: guided inthe partition .38. In the chamber 45be1OW the partition 38,a fioat46 is ar ranged, this float being mountedon the stem AC4, so.that when the chamber 45 fills with soy 'waterth'e'float will rise andmove the valve memberitg' against the seat 41. The float .46 also. actsasfa weight to causethe valve member 43 to open, at the same time, per;

mitting: said valve member to. move' 'upwardly.- A plunger l7guidedflinthe wall of the chamber 37 may be employed for'engagingwiththe valve stem 44 in orderto hold the valv e member 43"open. Q Thechamber 45 connects by apassageway 4L8 with the discharge head .3 sothat: the fluid pressure in the head provides compressed air in thepassageway 48 and chamber 4c5 vas well as in the compressed air chamber37. {Should 'water fromthe discharge head 3 pass by way ofthepassageway48 to thechamber 45', it will act on the float 46v and move the .valvemember43 toward the seat ll, closing 5' the passageway between thechamber and;

the chamber, so that the will 'theIiY VJhat I claim as myinventionianddesire act independently of the air chamber'ii'f, but seesnot to have its fluctuations accentuated. lVhen" the pump stops,thewater, in

the upper'portion "of the cylinder 8 will be drained ofi' by way of theleak port4 9, the

water which has been dischargedffrom the t "the same time,

sageway 48 and the discharge head, as well as to the chamber 87 by wayof an air inlet passageway 50 which is normally closed by "thecliamber'lat passageway 48, headv 3 and.

to secure byLetters' Patentisr l 1. A pump comprising'a cylinder, an airchamber at the upper end ofthexcylinder for absorbing the fluctuationsin the'water cola umn of the pu1np,fland means fora'utomaticallycutting-oil'said "air chamber from the cylinder when thewater rises to acertain point in the "system'and before the chamber becomes ineii'ectiveas a fluctuation absorbent medium.

chamber connecting with the .upper end of the cylinder for absorbing thefluctuations 2. A pump comprising a cylinder, an air in the'waterdeliveryof thepump,-and a float x a valve member 51. and held closed bythe air pressnrewithin the chamber 45,

, From the foregoing it will be seen that there'has been provided a'puinp in which the colnmn of water is sub ect to an air pressure p in anair chamber at the" upperend ofthisv column, this air chamber having'avalved connection with the cylinder of the pump and the valvedconnection being controlled by a float which will automatically shutoff; the air chamber in the: event that the air chamber becomes useless.Provision is also made for draining the pump below the. air

chamber when the pump is stoppe d so that' the" valve may again open soas to provide communicationbetween the air chamber and 'the cylinder, acheck valve being provided in the discharge lineof the pump so thatwater from the discharge line may notfiow hacli into the pump cylinderduring such drainage.

Provision is also made for! the admission or air to the air chamber andthat I portion of the pump above the 'drain opening 7 upon the draining;

-valve controlling the communication ofthe' chambe'rwith the" pumpcylinder.

A pump comprising acylinden-an air chamber communicating with theupperlend of the chamber, axvalv'e controll ng said-coininnnication, anda 'fioat, connected to said valve and normally holding said valve openand moving the valve tO'its'seat toclose 0d communication between'thecyl nder and the air chamber when the water rises toa'certain level.

A. A pump comprising acylinder, anair chamber communicating with theupper end of the cylinder, a check valve in the discharge of thecylinder, a float valve control:

ling communication between the cylinder and the air chamber, adrainingdevice connected with the cylinder below the float valve so thatthe float valve'after being closed may. automatically open uponthestopping of the pumping act on, and means for admitting air toftheair chamber upon such draining.

' WILLIAM. A. MINOR.

